X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fmanager.c;h=9d9a713005daf0047e7c9dd71c626bfb5d2df36e;hp=f70ff03033f85d58808ec84d40acc427a7b19ea3;hb=6b9732b2bf0499c5e4ea8a9d4f6051d98033f680;hpb=c51d84dc09476d9c06b8aac726220bf3c7d62e8d diff --git a/src/core/manager.c b/src/core/manager.c index f70ff0303..9d9a71300 100644 --- a/src/core/manager.c +++ b/src/core/manager.c @@ -22,9 +22,7 @@ #include #include #include -#include #include -#include #include #include #include @@ -42,9 +40,9 @@ #include #endif -#include "systemd/sd-daemon.h" -#include "systemd/sd-id128.h" -#include "systemd/sd-messages.h" +#include "sd-daemon.h" +#include "sd-id128.h" +#include "sd-messages.h" #include "manager.h" #include "transaction.h" @@ -58,12 +56,9 @@ #include "locale-setup.h" #include "mount-setup.h" #include "unit-name.h" -#include "dbus-unit.h" -#include "dbus-job.h" #include "missing.h" #include "path-lookup.h" #include "special.h" -#include "bus-errors.h" #include "exit-status.h" #include "virt.h" #include "watchdog.h" @@ -72,145 +67,51 @@ #include "audit-fd.h" #include "boot-timestamps.h" #include "env-util.h" +#include "bus-errors.h" +#include "bus-error.h" +#include "bus-util.h" +#include "dbus.h" +#include "dbus-unit.h" +#include "dbus-job.h" +#include "dbus-manager.h" +#include "bus-kernel.h" /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */ #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC) /* Initial delay and the interval for printing status messages about running jobs */ -#define JOBS_IN_PROGRESS_WAIT_SEC 5 -#define JOBS_IN_PROGRESS_PERIOD_SEC 1 +#define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC) +#define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 -/* Where clients shall send notification messages to */ -#define NOTIFY_SOCKET "@/org/freedesktop/systemd1/notify" - #define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1) -static int manager_setup_notify(Manager *m) { - union { - struct sockaddr sa; - struct sockaddr_un un; - } sa = { - .sa.sa_family = AF_UNIX, - }; - struct epoll_event ev = { - .events = EPOLLIN, - .data.ptr = &m->notify_watch, - }; - int one = 1, r; - - m->notify_watch.type = WATCH_NOTIFY; - m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); - if (m->notify_watch.fd < 0) { - log_error("Failed to allocate notification socket: %m"); - return -errno; - } - - if (getpid() != 1 || detect_container(NULL) > 0) - snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET "/%llu", random_ull()); - else - strncpy(sa.un.sun_path, NOTIFY_SOCKET, sizeof(sa.un.sun_path)); - - sa.un.sun_path[0] = 0; - - r = bind(m->notify_watch.fd, &sa.sa, - offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)); - if (r < 0) { - log_error("bind() failed: %m"); - return -errno; - } - - r = setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); - if (r < 0) { - log_error("SO_PASSCRED failed: %m"); - return -errno; - } - - r = epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev); - if (r < 0) { - log_error("Failed to add notification socket fd to epoll: %m"); - return -errno; - } - - sa.un.sun_path[0] = '@'; - m->notify_socket = strdup(sa.un.sun_path); - if (!m->notify_socket) - return log_oom(); - - log_debug("Using notification socket %s", m->notify_socket); - - return 0; -} - -static int manager_jobs_in_progress_mod_timer(Manager *m) { - struct itimerspec its = { - .it_value.tv_sec = JOBS_IN_PROGRESS_WAIT_SEC, - .it_interval.tv_sec = JOBS_IN_PROGRESS_PERIOD_SEC, - }; - - if (m->jobs_in_progress_watch.type != WATCH_JOBS_IN_PROGRESS) - return 0; - - if (timerfd_settime(m->jobs_in_progress_watch.fd, 0, &its, NULL) < 0) - return -errno; - - return 0; -} +static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); +static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); +static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); +static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); +static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); +static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); static int manager_watch_jobs_in_progress(Manager *m) { - struct epoll_event ev = { - .events = EPOLLIN, - .data.ptr = &m->jobs_in_progress_watch, - }; - int r; - - if (m->jobs_in_progress_watch.type != WATCH_INVALID) - return 0; - - m->jobs_in_progress_watch.type = WATCH_JOBS_IN_PROGRESS; - m->jobs_in_progress_watch.fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC); - if (m->jobs_in_progress_watch.fd < 0) { - log_error("Failed to create timerfd: %m"); - r = -errno; - goto err; - } - - r = manager_jobs_in_progress_mod_timer(m); - if (r < 0) { - log_error("Failed to set up timer for jobs progress watch: %s", strerror(-r)); - goto err; - } - - if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->jobs_in_progress_watch.fd, &ev) < 0) { - log_error("Failed to add jobs progress timer fd to epoll: %m"); - r = -errno; - goto err; - } + usec_t next; - log_debug("Set up jobs progress timerfd."); + assert(m); - return 0; + if (m->jobs_in_progress_event_source) + return 0; -err: - if (m->jobs_in_progress_watch.fd >= 0) - close_nointr_nofail(m->jobs_in_progress_watch.fd); - watch_init(&m->jobs_in_progress_watch); - return r; + next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC; + return sd_event_add_time( + m->event, + &m->jobs_in_progress_event_source, + CLOCK_MONOTONIC, + next, 0, + manager_dispatch_jobs_in_progress, m); } -static void manager_unwatch_jobs_in_progress(Manager *m) { - if (m->jobs_in_progress_watch.type != WATCH_JOBS_IN_PROGRESS) - return; - - assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->jobs_in_progress_watch.fd, NULL) >= 0); - close_nointr_nofail(m->jobs_in_progress_watch.fd); - watch_init(&m->jobs_in_progress_watch); - m->jobs_in_progress_iteration = 0; - - log_debug("Closed jobs progress timerfd."); -} +#define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED_ON)-1) + sizeof(ANSI_HIGHLIGHT_RED_ON)-1 + 2*(sizeof(ANSI_HIGHLIGHT_OFF)-1)) -#define CYLON_BUFFER_EXTRA (2*strlen(ANSI_RED_ON) + strlen(ANSI_HIGHLIGHT_RED_ON) + 2*strlen(ANSI_HIGHLIGHT_OFF)) static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { char *p = buffer; @@ -236,17 +137,35 @@ static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned po *p++ = '*'; if (pos < width-1) p = mempset(p, ' ', width-1-pos); - p = stpcpy(p, ANSI_HIGHLIGHT_OFF); + strcpy(p, ANSI_HIGHLIGHT_OFF); + } +} + +void manager_flip_auto_status(Manager *m, bool enable) { + assert(m); + + if (enable) { + if (m->show_status == SHOW_STATUS_AUTO) + manager_set_show_status(m, SHOW_STATUS_TEMPORARY); + } else { + if (m->show_status == SHOW_STATUS_TEMPORARY) + manager_set_show_status(m, SHOW_STATUS_AUTO); } } static void manager_print_jobs_in_progress(Manager *m) { + _cleanup_free_ char *job_of_n = NULL; Iterator i; Job *j; - char *job_of_n = NULL; unsigned counter = 0, print_nr; char cylon[6 + CYLON_BUFFER_EXTRA + 1]; unsigned cylon_pos; + char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit"; + uint64_t x; + + assert(m); + + manager_flip_auto_status(m, true); print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; @@ -257,106 +176,90 @@ static void manager_print_jobs_in_progress(Manager *m) { /* m->n_running_jobs must be consistent with the contents of m->jobs, * so the above loop must have succeeded in finding j. */ assert(counter == print_nr + 1); + assert(j); cylon_pos = m->jobs_in_progress_iteration % 14; if (cylon_pos >= 8) cylon_pos = 14 - cylon_pos; draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); + m->jobs_in_progress_iteration++; + if (m->n_running_jobs > 1) if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0) job_of_n = NULL; - manager_status_printf(m, true, cylon, "%sA %s job is running for %s", - strempty(job_of_n), job_type_to_string(j->type), unit_description(j->unit)); - free(job_of_n); + format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); + if (job_get_timeout(j, &x) > 0) + format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC); + + manager_status_printf(m, true, cylon, + "%sA %s job is running for %s (%s / %s)", + strempty(job_of_n), + job_type_to_string(j->type), + unit_description(j->unit), + time, limit); - m->jobs_in_progress_iteration++; } static int manager_watch_idle_pipe(Manager *m) { - struct epoll_event ev = { - .events = EPOLLIN, - .data.ptr = &m->idle_pipe_watch, - }; int r; - if (m->idle_pipe_watch.type != WATCH_INVALID) + assert(m); + + if (m->idle_pipe_event_source) return 0; if (m->idle_pipe[2] < 0) return 0; - m->idle_pipe_watch.type = WATCH_IDLE_PIPE; - m->idle_pipe_watch.fd = m->idle_pipe[2]; - if (m->idle_pipe_watch.fd < 0) { - log_error("Failed to create timerfd: %m"); - r = -errno; - goto err; - } - - if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->idle_pipe_watch.fd, &ev) < 0) { - log_error("Failed to add idle_pipe fd to epoll: %m"); - r = -errno; - goto err; + r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m); + if (r < 0) { + log_error("Failed to watch idle pipe: %s", strerror(-r)); + return r; } - log_debug("Set up idle_pipe watch."); - return 0; - -err: - if (m->idle_pipe_watch.fd >= 0) - close_nointr_nofail(m->idle_pipe_watch.fd); - watch_init(&m->idle_pipe_watch); - return r; } -static void manager_unwatch_idle_pipe(Manager *m) { - if (m->idle_pipe_watch.type != WATCH_IDLE_PIPE) - return; - - assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->idle_pipe_watch.fd, NULL) >= 0); - watch_init(&m->idle_pipe_watch); +static void manager_close_idle_pipe(Manager *m) { + assert(m); - log_debug("Closed idle_pipe watch."); + safe_close_pair(m->idle_pipe); + safe_close_pair(m->idle_pipe + 2); } static int manager_setup_time_change(Manager *m) { - struct epoll_event ev = { - .events = EPOLLIN, - .data.ptr = &m->time_change_watch, - }; + int r; /* We only care for the cancellation event, hence we set the * timeout to the latest possible value. */ struct itimerspec its = { .it_value.tv_sec = TIME_T_MAX, }; - assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX)); - assert(m->time_change_watch.type == WATCH_INVALID); + assert(m); + assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX)); /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */ - m->time_change_watch.type = WATCH_TIME_CHANGE; - m->time_change_watch.fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); - if (m->time_change_watch.fd < 0) { + m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); + if (m->time_change_fd < 0) { log_error("Failed to create timerfd: %m"); return -errno; } - if (timerfd_settime(m->time_change_watch.fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) { + if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) { log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m"); - close_nointr_nofail(m->time_change_watch.fd); - watch_init(&m->time_change_watch); + m->time_change_fd = safe_close(m->time_change_fd); return 0; } - if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->time_change_watch.fd, &ev) < 0) { - log_error("Failed to add timer change fd to epoll: %m"); - return -errno; + r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m); + if (r < 0) { + log_error("Failed to create time change event source: %s", strerror(-r)); + return r; } log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); @@ -365,7 +268,7 @@ static int manager_setup_time_change(Manager *m) { } static int enable_special_signals(Manager *m) { - int fd; + _cleanup_close_ int fd = -1; assert(m); @@ -383,24 +286,19 @@ static int enable_special_signals(Manager *m) { } else { /* Enable that we get SIGWINCH on kbrequest */ if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) - log_warning("Failed to enable kbrequest handling: %s", strerror(errno)); - - close_nointr_nofail(fd); + log_warning("Failed to enable kbrequest handling: %m"); } return 0; } static int manager_setup_signals(Manager *m) { - sigset_t mask; - struct epoll_event ev = { - .events = EPOLLIN, - .data.ptr = &m->signal_watch, - }; struct sigaction sa = { .sa_handler = SIG_DFL, .sa_flags = SA_NOCLDSTOP|SA_RESTART, }; + sigset_t mask; + int r; assert(m); @@ -441,13 +339,21 @@ static int manager_setup_signals(Manager *m) { -1); assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); - m->signal_watch.type = WATCH_SIGNAL; - m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); - if (m->signal_watch.fd < 0) + m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); + if (m->signal_fd < 0) return -errno; - if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0) - return -errno; + r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); + if (r < 0) + return r; + + /* Process signals a bit earlier than the rest of things, but + * later that notify_fd processing, so that the notify + * processing can still figure out to which process/service a + * message belongs, before we reap the process. */ + r = sd_event_source_set_priority(m->signal_event_source, -5); + if (r < 0) + return r; if (m->running_as == SYSTEMD_SYSTEM) return enable_special_signals(m); @@ -455,6 +361,23 @@ static int manager_setup_signals(Manager *m) { return 0; } +static void manager_clean_environment(Manager *m) { + assert(m); + + /* Let's remove some environment variables that we + * need ourselves to communicate with our clients */ + strv_env_unset_many( + m->environment, + "NOTIFY_SOCKET", + "MAINPID", + "MANAGERPID", + "LISTEN_PID", + "LISTEN_FDS", + "WATCHDOG_PID", + "WATCHDOG_USEC", + NULL); +} + static int manager_default_environment(Manager *m) { assert(m); @@ -471,20 +394,24 @@ static int manager_default_environment(Manager *m) { /* Import locale variables LC_*= from configuration */ locale_setup(&m->environment); - } else + } else { /* The user manager passes its own environment * along to its children. */ m->environment = strv_copy(environ); + } if (!m->environment) return -ENOMEM; + manager_clean_environment(m); + strv_sort(m->environment); + return 0; } -int manager_new(SystemdRunningAs running_as, bool reexecuting, Manager **_m) { +int manager_new(SystemdRunningAs running_as, Manager **_m) { Manager *m; - int r = -ENOMEM; + int r; assert(_m); assert(running_as >= 0); @@ -495,60 +422,68 @@ int manager_new(SystemdRunningAs running_as, bool reexecuting, Manager **_m) { return -ENOMEM; #ifdef ENABLE_EFI - if (detect_container(NULL) <= 0) + if (running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp); #endif m->running_as = running_as; - m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1; m->exit_code = _MANAGER_EXIT_CODE_INVALID; - m->pin_cgroupfs_fd = -1; - m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; + m->default_timer_accuracy_usec = USEC_PER_MINUTE; - watch_init(&m->signal_watch); - watch_init(&m->mount_watch); - watch_init(&m->swap_watch); - watch_init(&m->udev_watch); - watch_init(&m->time_change_watch); - watch_init(&m->jobs_in_progress_watch); + m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; - m->epoll_fd = m->dev_autofs_fd = -1; + m->pin_cgroupfs_fd = m->notify_fd = m->signal_fd = m->time_change_fd = m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = -1; m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ r = manager_default_environment(m); if (r < 0) goto fail; - if (!(m->units = hashmap_new(string_hash_func, string_compare_func))) + r = hashmap_ensure_allocated(&m->units, string_hash_func, string_compare_func); + if (r < 0) goto fail; - if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func))) + r = hashmap_ensure_allocated(&m->jobs, trivial_hash_func, trivial_compare_func); + if (r < 0) goto fail; - if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func))) + r = hashmap_ensure_allocated(&m->cgroup_unit, string_hash_func, string_compare_func); + if (r < 0) goto fail; - m->cgroup_unit = hashmap_new(string_hash_func, string_compare_func); - if (!m->cgroup_unit) + r = hashmap_ensure_allocated(&m->watch_bus, string_hash_func, string_compare_func); + if (r < 0) goto fail; - m->watch_bus = hashmap_new(string_hash_func, string_compare_func); - if (!m->watch_bus) + r = set_ensure_allocated(&m->startup_units, trivial_hash_func, trivial_compare_func); + if (r < 0) goto fail; - m->epoll_fd = epoll_create1(EPOLL_CLOEXEC); - if (m->epoll_fd < 0) + r = set_ensure_allocated(&m->failed_units, trivial_hash_func, trivial_compare_func); + if (r < 0) goto fail; - r = manager_setup_signals(m); + r = sd_event_default(&m->event); if (r < 0) goto fail; - r = manager_setup_cgroup(m); + r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); + if (r < 0) + goto fail; + + r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); + if (r < 0) + goto fail; + + r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); + if (r < 0) + goto fail; + + r = manager_setup_signals(m); if (r < 0) goto fail; - r = manager_setup_notify(m); + r = manager_setup_cgroup(m); if (r < 0) goto fail; @@ -556,14 +491,15 @@ int manager_new(SystemdRunningAs running_as, bool reexecuting, Manager **_m) { if (r < 0) goto fail; - /* Try to connect to the busses, if possible. */ - if ((running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS")) || - running_as == SYSTEMD_SYSTEM) { - r = bus_init(m, reexecuting || running_as != SYSTEMD_SYSTEM); - if (r < 0) - goto fail; - } else - log_debug("Skipping DBus session bus connection attempt - no DBUS_SESSION_BUS_ADDRESS set..."); + m->udev = udev_new(); + if (!m->udev) { + r = -ENOMEM; + goto fail; + } + + /* Note that we set up neither kdbus, nor the notify fd + * here. We do that after deserialization, since they might + * have gotten serialized across the reexec. */ m->taint_usr = dir_is_empty("/usr") > 0; @@ -575,6 +511,128 @@ fail: return r; } +static int manager_setup_notify(Manager *m) { + int r; + + if (m->notify_fd < 0) { + _cleanup_close_ int fd = -1; + union { + struct sockaddr sa; + struct sockaddr_un un; + } sa = { + .sa.sa_family = AF_UNIX, + }; + int one = 1; + + /* First free all secondary fields */ + free(m->notify_socket); + m->notify_socket = NULL; + m->notify_event_source = sd_event_source_unref(m->notify_event_source); + + fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); + if (fd < 0) { + log_error("Failed to allocate notification socket: %m"); + return -errno; + } + + if (m->running_as == SYSTEMD_SYSTEM) + m->notify_socket = strdup("/run/systemd/notify"); + else { + const char *e; + + e = getenv("XDG_RUNTIME_DIR"); + if (!e) { + log_error("XDG_RUNTIME_DIR is not set: %m"); + return -EINVAL; + } + + m->notify_socket = strappend(e, "/systemd/notify"); + } + if (!m->notify_socket) + return log_oom(); + + strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1); + r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)); + if (r < 0) { + log_error("bind(@%s) failed: %m", sa.un.sun_path+1); + return -errno; + } + + r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); + if (r < 0) { + log_error("SO_PASSCRED failed: %m"); + return -errno; + } + + m->notify_fd = fd; + fd = -1; + + log_debug("Using notification socket %s", m->notify_socket); + } + + if (!m->notify_event_source) { + r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); + if (r < 0) { + log_error("Failed to allocate notify event source: %s", strerror(-r)); + return -errno; + } + + /* Process signals a bit earlier than SIGCHLD, so that we can + * still identify to which service an exit message belongs */ + r = sd_event_source_set_priority(m->notify_event_source, -7); + if (r < 0) { + log_error("Failed to set priority of notify event source: %s", strerror(-r)); + return r; + } + } + + return 0; +} + +static int manager_setup_kdbus(Manager *m) { +#ifdef ENABLE_KDBUS + _cleanup_free_ char *p = NULL; +#endif + +#ifdef ENABLE_KDBUS + assert(m); + + if (m->kdbus_fd >= 0) + return 0; + + m->kdbus_fd = bus_kernel_create_bus(m->running_as == SYSTEMD_SYSTEM ? "system" : "user", m->running_as == SYSTEMD_SYSTEM, &p); + if (m->kdbus_fd < 0) { + log_debug("Failed to set up kdbus: %s", strerror(-m->kdbus_fd)); + return m->kdbus_fd; + } + + log_debug("Successfully set up kdbus on %s", p); + + /* Create the namespace directory here, so that the contents + * of that directory is not visible to non-root users. This is + * necessary to ensure that users cannot get access to busses + * of virtualized users when no UID namespacing is used. */ + if (m->running_as == SYSTEMD_SYSTEM) + mkdir_p_label("/dev/kdbus/domain", 0700); +#endif + + return 0; +} + +static int manager_connect_bus(Manager *m, bool reexecuting) { + bool try_bus_connect; + + assert(m); + + try_bus_connect = + m->kdbus_fd >= 0 || + reexecuting || + (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS")); + + /* Try to connect to the busses, if possible. */ + return bus_init(m, try_bus_connect); +} + static unsigned manager_dispatch_cleanup_queue(Manager *m) { Unit *u; unsigned n = 0; @@ -671,7 +729,7 @@ static unsigned manager_dispatch_gc_queue(Manager *m) { unit_gc_sweep(u, gc_marker); - LIST_REMOVE(Unit, gc_queue, m->gc_queue, u); + LIST_REMOVE(gc_queue, m->gc_queue, u); u->in_gc_queue = false; n++; @@ -713,11 +771,6 @@ static void manager_clear_jobs_and_units(Manager *m) { m->n_running_jobs = 0; } -static void close_idle_pipe(Manager *m) { - close_pipe(m->idle_pipe); - close_pipe(m->idle_pipe + 2); -} - void manager_free(Manager *m) { UnitType c; int i; @@ -740,19 +793,29 @@ void manager_free(Manager *m) { hashmap_free(m->units); hashmap_free(m->jobs); - hashmap_free(m->watch_pids); + hashmap_free(m->watch_pids1); + hashmap_free(m->watch_pids2); hashmap_free(m->watch_bus); - if (m->epoll_fd >= 0) - close_nointr_nofail(m->epoll_fd); - if (m->signal_watch.fd >= 0) - close_nointr_nofail(m->signal_watch.fd); - if (m->notify_watch.fd >= 0) - close_nointr_nofail(m->notify_watch.fd); - if (m->time_change_watch.fd >= 0) - close_nointr_nofail(m->time_change_watch.fd); - if (m->jobs_in_progress_watch.fd >= 0) - close_nointr_nofail(m->jobs_in_progress_watch.fd); + set_free(m->startup_units); + set_free(m->failed_units); + + sd_event_source_unref(m->signal_event_source); + sd_event_source_unref(m->notify_event_source); + sd_event_source_unref(m->time_change_event_source); + sd_event_source_unref(m->jobs_in_progress_event_source); + sd_event_source_unref(m->idle_pipe_event_source); + sd_event_source_unref(m->run_queue_event_source); + + safe_close(m->signal_fd); + safe_close(m->notify_fd); + safe_close(m->time_change_fd); + safe_close(m->kdbus_fd); + + manager_close_idle_pipe(m); + + udev_unref(m->udev); + sd_event_unref(m->event); free(m->notify_socket); @@ -762,14 +825,15 @@ void manager_free(Manager *m) { hashmap_free(m->cgroup_unit); set_free_free(m->unit_path_cache); - close_idle_pipe(m); - free(m->switch_root); free(m->switch_root_init); - for (i = 0; i < RLIMIT_NLIMITS; i++) + for (i = 0; i < _RLIMIT_MAX; i++) free(m->rlimit[i]); + assert(hashmap_isempty(m->units_requiring_mounts_for)); + hashmap_free(m->units_requiring_mounts_for); + free(m); } @@ -782,16 +846,18 @@ int manager_enumerate(Manager *m) { /* Let's ask every type to load all units from disk/kernel * that it might know */ for (c = 0; c < _UNIT_TYPE_MAX; c++) - if (unit_vtable[c]->enumerate) - if ((q = unit_vtable[c]->enumerate(m)) < 0) + if (unit_vtable[c]->enumerate) { + q = unit_vtable[c]->enumerate(m); + if (q < 0) r = q; + } manager_dispatch_load_queue(m); return r; } -int manager_coldplug(Manager *m) { - int r = 0, q; +static int manager_coldplug(Manager *m) { + int r = 0; Iterator i; Unit *u; char *k; @@ -800,12 +866,14 @@ int manager_coldplug(Manager *m) { /* Then, let's set up their initial state. */ HASHMAP_FOREACH_KEY(u, k, m->units, i) { + int q; /* ignore aliases */ if (u->id != k) continue; - if ((q = unit_coldplug(u)) < 0) + q = unit_coldplug(u); + if (q < 0) r = q; } @@ -870,6 +938,29 @@ fail: m->unit_path_cache = NULL; } + +static int manager_distribute_fds(Manager *m, FDSet *fds) { + Unit *u; + Iterator i; + int r; + + assert(m); + + HASHMAP_FOREACH(u, m->units, i) { + + if (fdset_size(fds) <= 0) + break; + + if (UNIT_VTABLE(u)->distribute_fds) { + r = UNIT_VTABLE(u)->distribute_fds(u, fds); + if (r < 0) + return r; + } + } + + return 0; +} + int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { int r, q; @@ -881,6 +972,7 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { r = lookup_paths_init( &m->lookup_paths, m->running_as, true, + NULL, m->generator_unit_path, m->generator_unit_path_early, m->generator_unit_path_late); @@ -896,9 +988,9 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { m->n_reloading ++; /* First, enumerate what we can from all config files */ - dual_timestamp_get(&m->unitsload_start_timestamp); + dual_timestamp_get(&m->units_load_start_timestamp); r = manager_enumerate(m); - dual_timestamp_get(&m->unitsload_finish_timestamp); + dual_timestamp_get(&m->units_load_finish_timestamp); /* Second, deserialize if there is something to deserialize */ if (serialization) { @@ -917,6 +1009,16 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { r = q; } + /* We might have deserialized the notify fd, but if we didn't + * then let's create the bus now */ + manager_setup_notify(m); + + /* We might have deserialized the kdbus control fd, but if we + * didn't, then let's create the bus now. */ + manager_setup_kdbus(m); + manager_connect_bus(m, !!serialization); + bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed); + /* Third, fire things up! */ q = manager_coldplug(m); if (q < 0) @@ -935,7 +1037,7 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { return r; } -int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) { +int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, sd_bus_error *e, Job **_ret) { int r; Transaction *tr; @@ -945,12 +1047,12 @@ int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool ove assert(mode < _JOB_MODE_MAX); if (mode == JOB_ISOLATE && type != JOB_START) { - dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start."); + sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); return -EINVAL; } if (mode == JOB_ISOLATE && !unit->allow_isolate) { - dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); + sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); return -EPERM; } @@ -996,7 +1098,7 @@ tr_abort: return r; } -int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) { +int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, sd_bus_error *e, Job **_ret) { Unit *unit; int r; @@ -1055,7 +1157,7 @@ int manager_load_unit_prepare( Manager *m, const char *name, const char *path, - DBusError *e, + sd_bus_error *e, Unit **_ret) { Unit *ret; @@ -1068,20 +1170,16 @@ int manager_load_unit_prepare( /* This will prepare the unit for loading, but not actually * load anything from disk. */ - if (path && !is_path(path)) { - dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path); - return -EINVAL; - } + if (path && !is_path(path)) + return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); if (!name) - name = path_get_file_name(path); + name = basename(path); t = unit_name_to_type(name); - if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false)) { - dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name); - return -EINVAL; - } + if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, TEMPLATE_INVALID)) + return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); ret = manager_get_unit(m, name); if (ret) { @@ -1121,7 +1219,7 @@ int manager_load_unit( Manager *m, const char *name, const char *path, - DBusError *e, + sd_bus_error *e, Unit **_ret) { int r; @@ -1177,35 +1275,30 @@ void manager_clear_jobs(Manager *m) { job_finish_and_invalidate(j, JOB_CANCELED, false); } -unsigned manager_dispatch_run_queue(Manager *m) { +static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { + Manager *m = userdata; Job *j; - unsigned n = 0; - - if (m->dispatching_run_queue) - return 0; - m->dispatching_run_queue = true; + assert(source); + assert(m); while ((j = m->run_queue)) { assert(j->installed); assert(j->in_run_queue); job_run_and_invalidate(j); - n++; } - m->dispatching_run_queue = false; - if (m->n_running_jobs > 0) manager_watch_jobs_in_progress(m); if (m->n_on_console > 0) manager_watch_idle_pipe(m); - return n; + return 1; } -unsigned manager_dispatch_dbus_queue(Manager *m) { +static unsigned manager_dispatch_dbus_queue(Manager *m) { Job *j; Unit *u; unsigned n = 0; @@ -1236,16 +1329,46 @@ unsigned manager_dispatch_dbus_queue(Manager *m) { if (m->send_reloading_done) { m->send_reloading_done = false; - bus_broadcast_reloading(m, false); + bus_manager_send_reloading(m, false); } + if (m->queued_message) + bus_send_queued_message(m); + return n; } -static int manager_process_notify_fd(Manager *m) { - ssize_t n; +static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n) { + _cleanup_strv_free_ char **tags = NULL; assert(m); + assert(u); + assert(buf); + assert(n > 0); + + tags = strv_split(buf, "\n\r"); + if (!tags) { + log_oom(); + return; + } + + log_debug_unit(u->id, "Got notification message for unit %s", u->id); + + if (UNIT_VTABLE(u)->notify_message) + UNIT_VTABLE(u)->notify_message(u, pid, tags); +} + +static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { + Manager *m = userdata; + ssize_t n; + + assert(m); + assert(m->notify_fd == fd); + + if (revents != EPOLLIN) { + log_warning("Got unexpected poll event for notify fd."); + return 0; + } for (;;) { char buf[4096]; @@ -1253,6 +1376,7 @@ static int manager_process_notify_fd(Manager *m) { .iov_base = buf, .iov_len = sizeof(buf)-1, }; + bool found = false; union { struct cmsghdr cmsghdr; @@ -1267,9 +1391,8 @@ static int manager_process_notify_fd(Manager *m) { }; struct ucred *ucred; Unit *u; - _cleanup_strv_free_ char **tags = NULL; - n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT); + n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT); if (n <= 0) { if (n == 0) return -EIO; @@ -1290,37 +1413,50 @@ static int manager_process_notify_fd(Manager *m) { ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr); - u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid)); - if (!u) { - u = manager_get_unit_by_pid(m, ucred->pid); - if (!u) { - log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid); - continue; - } - } - assert((size_t) n < sizeof(buf)); buf[n] = 0; - tags = strv_split(buf, "\n\r"); - if (!tags) - return log_oom(); - log_debug_unit(u->id, "Got notification message for unit %s", u->id); + u = manager_get_unit_by_pid(m, ucred->pid); + if (u) { + manager_invoke_notify_message(m, u, ucred->pid, buf, n); + found = true; + } - if (UNIT_VTABLE(u)->notify_message) - UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags); + u = hashmap_get(m->watch_pids1, LONG_TO_PTR(ucred->pid)); + if (u) { + manager_invoke_notify_message(m, u, ucred->pid, buf, n); + found = true; + } + + u = hashmap_get(m->watch_pids2, LONG_TO_PTR(ucred->pid)); + if (u) { + manager_invoke_notify_message(m, u, ucred->pid, buf, n); + found = true; + } + + if (!found) + log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid); } return 0; } +static void invoke_sigchld_event(Manager *m, Unit *u, siginfo_t *si) { + assert(m); + assert(u); + assert(si); + + log_debug_unit(u->id, "Child "PID_FMT" belongs to %s", si->si_pid, u->id); + + unit_unwatch_pid(u, si->si_pid); + UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); +} + static int manager_dispatch_sigchld(Manager *m) { assert(m); for (;;) { siginfo_t si = {}; - Unit *u; - int r; /* First we call waitd() for a PID and do not reap the * zombie. That way we can still access /proc/$PID for @@ -1341,23 +1477,30 @@ static int manager_dispatch_sigchld(Manager *m) { if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { _cleanup_free_ char *name = NULL; + Unit *u; get_process_comm(si.si_pid, &name); - log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name)); - } - /* Let's flush any message the dying child might still - * have queued for us. This ensures that the process - * still exists in /proc so that we can figure out - * which cgroup and hence unit it belongs to. */ - r = manager_process_notify_fd(m); - if (r < 0) - return r; + log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", + si.si_pid, strna(name), + sigchld_code_to_string(si.si_code), + si.si_status, + strna(si.si_code == CLD_EXITED + ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) + : signal_to_string(si.si_status))); - /* And now figure out the unit this belongs to */ - u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid)); - if (!u) + /* And now figure out the unit this belongs + * to, it might be multiple... */ u = manager_get_unit_by_pid(m, si.si_pid); + if (u) + invoke_sigchld_event(m, u, &si); + u = hashmap_get(m->watch_pids1, LONG_TO_PTR(si.si_pid)); + if (u) + invoke_sigchld_event(m, u, &si); + u = hashmap_get(m->watch_pids2, LONG_TO_PTR(si.si_pid)); + if (u) + invoke_sigchld_event(m, u, &si); + } /* And now, we actually reap the zombie. */ if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { @@ -1366,58 +1509,40 @@ static int manager_dispatch_sigchld(Manager *m) { return -errno; } - - if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED) - continue; - - log_debug("Child %lu died (code=%s, status=%i/%s)", - (long unsigned) si.si_pid, - sigchld_code_to_string(si.si_code), - si.si_status, - strna(si.si_code == CLD_EXITED - ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) - : signal_to_string(si.si_status))); - - if (!u) - continue; - - log_debug_unit(u->id, - "Child %lu belongs to %s", (long unsigned) si.si_pid, u->id); - - hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid)); - UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status); } return 0; } static int manager_start_target(Manager *m, const char *name, JobMode mode) { + _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; int r; - DBusError error; - - dbus_error_init(&error); log_debug_unit(name, "Activating special unit %s", name); r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL); if (r < 0) - log_error_unit(name, - "Failed to enqueue %s job: %s", name, bus_error(&error, r)); - - dbus_error_free(&error); + log_error_unit(name, "Failed to enqueue %s job: %s", name, bus_error_message(&error, r)); return r; } -static int manager_process_signal_fd(Manager *m) { +static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { + Manager *m = userdata; ssize_t n; struct signalfd_siginfo sfsi; bool sigchld = false; assert(m); + assert(m->signal_fd == fd); + + if (revents != EPOLLIN) { + log_warning("Got unexpected events from signal file descriptor."); + return 0; + } for (;;) { - n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi)); + n = read(m->signal_fd, &sfsi, sizeof(sfsi)); if (n != sizeof(sfsi)) { if (n >= 0) @@ -1429,17 +1554,10 @@ static int manager_process_signal_fd(Manager *m) { return -errno; } - if (sfsi.ssi_pid > 0) { - char *p = NULL; - - get_process_comm(sfsi.ssi_pid, &p); - - log_debug("Received SIG%s from PID %lu (%s).", - signal_to_string(sfsi.ssi_signo), - (unsigned long) sfsi.ssi_pid, strna(p)); - free(p); - } else - log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo)); + log_received_signal(sfsi.ssi_signo == SIGCHLD || + (sfsi.ssi_signo == SIGTERM && m->running_as == SYSTEMD_USER) + ? LOG_DEBUG : LOG_INFO, + &sfsi); switch (sfsi.ssi_signo) { @@ -1504,11 +1622,12 @@ static int manager_process_signal_fd(Manager *m) { } case SIGUSR2: { - FILE *f; - char *dump = NULL; + _cleanup_free_ char *dump = NULL; + _cleanup_fclose_ FILE *f = NULL; size_t size; - if (!(f = open_memstream(&dump, &size))) { + f = open_memstream(&dump, &size); + if (!f) { log_warning("Failed to allocate memory stream."); break; } @@ -1517,16 +1636,16 @@ static int manager_process_signal_fd(Manager *m) { manager_dump_jobs(m, f, "\t"); if (ferror(f)) { - fclose(f); - free(dump); log_warning("Failed to write status stream"); break; } - fclose(f); - log_dump(LOG_INFO, dump); - free(dump); + if (fflush(f)) { + log_warning("Failed to flush status stream"); + break; + } + log_dump(LOG_INFO, dump); break; } @@ -1573,12 +1692,12 @@ static int manager_process_signal_fd(Manager *m) { case 20: log_debug("Enabling showing of status."); - manager_set_show_status(m, true); + manager_set_show_status(m, SHOW_STATUS_YES); break; case 21: log_debug("Disabling showing of status."); - manager_set_show_status(m, false); + manager_set_show_status(m, SHOW_STATUS_NO); break; case 22: @@ -1628,147 +1747,67 @@ static int manager_process_signal_fd(Manager *m) { } if (sigchld) - return manager_dispatch_sigchld(m); + manager_dispatch_sigchld(m); return 0; } -static int process_event(Manager *m, struct epoll_event *ev) { - int r; - Watch *w; +static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { + Manager *m = userdata; + Iterator i; + Unit *u; assert(m); - assert(ev); - - assert_se(w = ev->data.ptr); - - if (w->type == WATCH_INVALID) - return 0; + assert(m->time_change_fd == fd); - switch (w->type) { + log_struct(LOG_INFO, + MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), + "MESSAGE=Time has been changed", + NULL); - case WATCH_SIGNAL: + /* Restart the watch */ + m->time_change_event_source = sd_event_source_unref(m->time_change_event_source); + m->time_change_fd = safe_close(m->time_change_fd); - /* An incoming signal? */ - if (ev->events != EPOLLIN) - return -EINVAL; - - if ((r = manager_process_signal_fd(m)) < 0) - return r; - - break; - - case WATCH_NOTIFY: - - /* An incoming daemon notification event? */ - if (ev->events != EPOLLIN) - return -EINVAL; - - if ((r = manager_process_notify_fd(m)) < 0) - return r; - - break; - - case WATCH_FD: - - /* Some fd event, to be dispatched to the units */ - UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w); - break; - - case WATCH_UNIT_TIMER: - case WATCH_JOB_TIMER: { - uint64_t v; - ssize_t k; - - /* Some timer event, to be dispatched to the units */ - k = read(w->fd, &v, sizeof(v)); - if (k != sizeof(v)) { - - if (k < 0 && (errno == EINTR || errno == EAGAIN)) - break; - - log_error("Failed to read timer event counter: %s", k < 0 ? strerror(-k) : "Short read"); - return k < 0 ? -errno : -EIO; - } - - if (w->type == WATCH_UNIT_TIMER) - UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w); - else - job_timer_event(w->data.job, v, w); - break; - } + manager_setup_time_change(m); - case WATCH_MOUNT: - /* Some mount table change, intended for the mount subsystem */ - mount_fd_event(m, ev->events); - break; - - case WATCH_SWAP: - /* Some swap table change, intended for the swap subsystem */ - swap_fd_event(m, ev->events); - break; - - case WATCH_UDEV: - /* Some notification from udev, intended for the device subsystem */ - device_fd_event(m, ev->events); - break; + HASHMAP_FOREACH(u, m->units, i) + if (UNIT_VTABLE(u)->time_change) + UNIT_VTABLE(u)->time_change(u); - case WATCH_DBUS_WATCH: - bus_watch_event(m, w, ev->events); - break; + return 0; +} - case WATCH_DBUS_TIMEOUT: - bus_timeout_event(m, w, ev->events); - break; +static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { + Manager *m = userdata; - case WATCH_TIME_CHANGE: { - Unit *u; - Iterator i; - - log_struct(LOG_INFO, - MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), - "MESSAGE=Time has been changed", - NULL); - - /* Restart the watch */ - epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->time_change_watch.fd, - NULL); - close_nointr_nofail(m->time_change_watch.fd); - watch_init(&m->time_change_watch); - manager_setup_time_change(m); - - HASHMAP_FOREACH(u, m->units, i) { - if (UNIT_VTABLE(u)->time_change) - UNIT_VTABLE(u)->time_change(u); - } + assert(m); + assert(m->idle_pipe[2] == fd); - break; - } + m->no_console_output = m->n_on_console > 0; - case WATCH_JOBS_IN_PROGRESS: { - uint64_t v; + m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source); + manager_close_idle_pipe(m); - /* not interested in the data */ - read(w->fd, &v, sizeof(v)); + return 0; +} - manager_print_jobs_in_progress(m); - break; - } +static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { + Manager *m = userdata; + int r; + uint64_t next; - case WATCH_IDLE_PIPE: { - m->no_console_output = true; + assert(m); + assert(source); - manager_unwatch_idle_pipe(m); - close_idle_pipe(m); - break; - } + manager_print_jobs_in_progress(m); - default: - log_error("event type=%i", w->type); - assert_not_reached("Unknown epoll event type."); - } + next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC; + r = sd_event_source_set_time(source, next); + if (r < 0) + return r; - return 0; + return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); } int manager_loop(Manager *m) { @@ -1777,7 +1816,7 @@ int manager_loop(Manager *m) { RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); assert(m); - m->exit_code = MANAGER_RUNNING; + m->exit_code = MANAGER_OK; /* Release the path cache */ set_free_free(m->unit_path_cache); @@ -1786,15 +1825,13 @@ int manager_loop(Manager *m) { manager_check_finished(m); /* There might still be some zombies hanging around from - * before we were exec()'ed. Leat's reap them */ + * before we were exec()'ed. Let's reap them. */ r = manager_dispatch_sigchld(m); if (r < 0) return r; - while (m->exit_code == MANAGER_RUNNING) { - struct epoll_event event; - int n; - int wait_msec = -1; + while (m->exit_code == MANAGER_OK) { + usec_t wait_usec; if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) watchdog_ping(); @@ -1818,47 +1855,28 @@ int manager_loop(Manager *m) { if (manager_dispatch_cgroup_queue(m) > 0) continue; - if (manager_dispatch_run_queue(m) > 0) - continue; - - if (bus_dispatch(m) > 0) - continue; - if (manager_dispatch_dbus_queue(m) > 0) continue; - if (swap_dispatch_reload(m) > 0) - continue; - /* Sleep for half the watchdog time */ if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) { - wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC); - if (wait_msec <= 0) - wait_msec = 1; + wait_usec = m->runtime_watchdog / 2; + if (wait_usec <= 0) + wait_usec = 1; } else - wait_msec = -1; - - n = epoll_wait(m->epoll_fd, &event, 1, wait_msec); - if (n < 0) { - - if (errno == EINTR) - continue; - - return -errno; - } else if (n == 0) - continue; - - assert(n == 1); + wait_usec = (usec_t) -1; - r = process_event(m, &event); - if (r < 0) + r = sd_event_run(m->event, wait_usec); + if (r < 0) { + log_error("Failed to run event loop: %s", strerror(-r)); return r; + } } return m->exit_code; } -int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) { +int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { _cleanup_free_ char *n = NULL; Unit *u; int r; @@ -1881,18 +1899,20 @@ int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Un } int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { - Job *j; + const char *p; unsigned id; + Job *j; int r; assert(m); assert(s); assert(_j); - if (!startswith(s, "/org/freedesktop/systemd1/job/")) + p = startswith(s, "/org/freedesktop/systemd1/job/"); + if (!p) return -EINVAL; - r = safe_atou(s + 30, &id); + r = safe_atou(p, &id); if (r < 0) return r; @@ -1908,7 +1928,7 @@ int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { #ifdef HAVE_AUDIT - char *p; + _cleanup_free_ char *p = NULL; int audit_fd; audit_fd = get_audit_fd(); @@ -1941,17 +1961,19 @@ void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { } else log_warning("Failed to send audit message: %m"); } - - free(p); #endif } void manager_send_unit_plymouth(Manager *m, Unit *u) { - int fd = -1; - union sockaddr_union sa; + union sockaddr_union sa = { + .un.sun_family = AF_UNIX, + .un.sun_path = "\0/org/freedesktop/plymouthd", + }; + int n = 0; - char *message = NULL; + _cleanup_free_ char *message = NULL; + _cleanup_close_ int fd = -1; /* Don't generate plymouth events if the service was already * started and we're just deserializing */ @@ -1961,6 +1983,9 @@ void manager_send_unit_plymouth(Manager *m, Unit *u) { if (m->running_as != SYSTEMD_SYSTEM) return; + if (detect_container(NULL) > 0) + return; + if (u->type != UNIT_SERVICE && u->type != UNIT_MOUNT && u->type != UNIT_SWAP) @@ -1974,46 +1999,22 @@ void manager_send_unit_plymouth(Manager *m, Unit *u) { return; } - zero(sa); - sa.sa.sa_family = AF_UNIX; - strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1); if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { - if (errno != EPIPE && - errno != EAGAIN && - errno != ENOENT && - errno != ECONNREFUSED && - errno != ECONNRESET && - errno != ECONNABORTED) + if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) log_error("connect() failed: %m"); - - goto finish; + return; } if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { log_oom(); - goto finish; + return; } errno = 0; - if (write(fd, message, n + 1) != n + 1) { - - if (errno != EPIPE && - errno != EAGAIN && - errno != ENOENT && - errno != ECONNREFUSED && - errno != ECONNRESET && - errno != ECONNABORTED) + if (write(fd, message, n + 1) != n + 1) + if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) log_error("Failed to write Plymouth message: %m"); - - goto finish; - } - -finish: - if (fd >= 0) - close_nointr_nofail(fd); - - free(message); } void manager_dispatch_bus_name_owner_changed( @@ -2027,61 +2028,32 @@ void manager_dispatch_bus_name_owner_changed( assert(m); assert(name); - if (!(u = hashmap_get(m->watch_bus, name))) + u = hashmap_get(m->watch_bus, name); + if (!u) return; UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); } -void manager_dispatch_bus_query_pid_done( - Manager *m, - const char *name, - pid_t pid) { - - Unit *u; - - assert(m); - assert(name); - assert(pid >= 1); - - if (!(u = hashmap_get(m->watch_bus, name))) - return; - - UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid); -} - int manager_open_serialization(Manager *m, FILE **_f) { - char *path = NULL; - int fd; + const char *path; + int fd = -1; FILE *f; assert(_f); - if (m->running_as == SYSTEMD_SYSTEM) - asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid()); - else - asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid()); - - if (!path) - return -ENOMEM; - - RUN_WITH_UMASK(0077) { - fd = mkostemp(path, O_RDWR|O_CLOEXEC); - } - - if (fd < 0) { - free(path); + path = m->running_as == SYSTEMD_SYSTEM ? "/run/systemd" : "/tmp"; + fd = open_tmpfile(path, O_RDWR|O_CLOEXEC); + if (fd < 0) return -errno; - } - - unlink(path); log_debug("Serializing state to %s", path); - free(path); f = fdopen(fd, "w+"); - if (!f) + if (!f) { + safe_close(fd); return -errno; + } *_f = f; @@ -2107,13 +2079,19 @@ int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp); - dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp); dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp); + dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp); dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); if (!in_initrd()) { dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp); dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); + dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp); + dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp); + dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp); + dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp); + dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp); + dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp); } if (!switching_root) { @@ -2121,12 +2099,35 @@ int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { _cleanup_free_ char *ce; ce = cescape(*e); - if (ce) - fprintf(f, "env=%s\n", *e); + if (!ce) + return -ENOMEM; + + fprintf(f, "env=%s\n", *e); } } - bus_serialize(m, f); + if (m->notify_fd >= 0) { + int copy; + + copy = fdset_put_dup(fds, m->notify_fd); + if (copy < 0) + return copy; + + fprintf(f, "notify-fd=%i\n", copy); + fprintf(f, "notify-socket=%s\n", m->notify_socket); + } + + if (m->kdbus_fd >= 0) { + int copy; + + copy = fdset_put_dup(fds, m->kdbus_fd); + if (copy < 0) + return copy; + + fprintf(f, "kdbus-fd=%i\n", copy); + } + + bus_track_serialize(m->subscribed, f); fputc('\n', f); @@ -2134,9 +2135,6 @@ int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { if (u->id != t) continue; - if (!unit_can_serialize(u)) - continue; - /* Start marker */ fputs(u->id, f); fputc('\n', f); @@ -2196,6 +2194,7 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { log_debug("Failed to parse current job id value %s", l+15); else m->current_job_id = MAX(m->current_job_id, id); + } else if (startswith(l, "n-installed-jobs=")) { uint32_t n; @@ -2203,6 +2202,7 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { log_debug("Failed to parse installed jobs counter %s", l+17); else m->n_installed_jobs += n; + } else if (startswith(l, "n-failed-jobs=")) { uint32_t n; @@ -2210,13 +2210,16 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { log_debug("Failed to parse failed jobs counter %s", l+14); else m->n_failed_jobs += n; + } else if (startswith(l, "taint-usr=")) { int b; - if ((b = parse_boolean(l+10)) < 0) + b = parse_boolean(l+10); + if (b < 0) log_debug("Failed to parse taint /usr flag %s", l+10); else m->taint_usr = m->taint_usr || b; + } else if (startswith(l, "firmware-timestamp=")) dual_timestamp_deserialize(l+19, &m->firmware_timestamp); else if (startswith(l, "loader-timestamp=")) @@ -2229,6 +2232,18 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { dual_timestamp_deserialize(l+20, &m->userspace_timestamp); else if (startswith(l, "finish-timestamp=")) dual_timestamp_deserialize(l+17, &m->finish_timestamp); + else if (startswith(l, "security-start-timestamp=")) + dual_timestamp_deserialize(l+25, &m->security_start_timestamp); + else if (startswith(l, "security-finish-timestamp=")) + dual_timestamp_deserialize(l+26, &m->security_finish_timestamp); + else if (startswith(l, "generators-start-timestamp=")) + dual_timestamp_deserialize(l+27, &m->generators_start_timestamp); + else if (startswith(l, "generators-finish-timestamp=")) + dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp); + else if (startswith(l, "units-load-start-timestamp=")) + dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp); + else if (startswith(l, "units-load-finish-timestamp=")) + dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp); else if (startswith(l, "env=")) { _cleanup_free_ char *uce = NULL; char **e; @@ -2247,7 +2262,41 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { strv_free(m->environment); m->environment = e; - } else if (bus_deserialize_item(m, l) == 0) + + } else if (startswith(l, "notify-fd=")) { + int fd; + + if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) + log_debug("Failed to parse notify fd: %s", l + 10); + else { + m->notify_event_source = sd_event_source_unref(m->notify_event_source); + safe_close(m->notify_fd); + m->notify_fd = fdset_remove(fds, fd); + } + + } else if (startswith(l, "notify-socket=")) { + char *n; + + n = strdup(l+14); + if (!n) { + r = -ENOMEM; + goto finish; + } + + free(m->notify_socket); + m->notify_socket = n; + + } else if (startswith(l, "kdbus-fd=")) { + int fd; + + if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) + log_debug("Failed to parse kdbus fd: %s", l + 9); + else { + safe_close(m->kdbus_fd); + m->kdbus_fd = fdset_remove(fds, fd); + } + + } else if (bus_track_deserialize_item(&m->deserialized_subscribed, l) == 0) log_debug("Unknown serialization item '%s'", l); } @@ -2277,10 +2326,8 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { } finish: - if (ferror(f)) { + if (ferror(f)) r = -EIO; - goto finish; - } assert(m->n_reloading > 0); m->n_reloading --; @@ -2288,32 +2335,10 @@ finish: return r; } -int manager_distribute_fds(Manager *m, FDSet *fds) { - Unit *u; - Iterator i; - int r; - - assert(m); - - HASHMAP_FOREACH(u, m->units, i) { - - if (fdset_size(fds) <= 0) - break; - - if (UNIT_VTABLE(u)->distribute_fds) { - r = UNIT_VTABLE(u)->distribute_fds(u, fds); - if (r < 0) - return r; - } - } - - return 0; -} - int manager_reload(Manager *m) { int r, q; - FILE *f; - FDSet *fds; + _cleanup_fclose_ FILE *f = NULL; + _cleanup_fdset_free_ FDSet *fds = NULL; assert(m); @@ -2322,25 +2347,23 @@ int manager_reload(Manager *m) { return r; m->n_reloading ++; - bus_broadcast_reloading(m, true); + bus_manager_send_reloading(m, true); fds = fdset_new(); if (!fds) { m->n_reloading --; - r = -ENOMEM; - goto finish; + return -ENOMEM; } r = manager_serialize(m, f, fds, false); if (r < 0) { m->n_reloading --; - goto finish; + return r; } if (fseeko(f, 0, SEEK_SET) < 0) { m->n_reloading --; - r = -errno; - goto finish; + return -errno; } /* From here on there is no way back. */ @@ -2353,6 +2376,7 @@ int manager_reload(Manager *m) { q = lookup_paths_init( &m->lookup_paths, m->running_as, true, + NULL, m->generator_unit_path, m->generator_unit_path_early, m->generator_unit_path_late); @@ -2374,6 +2398,11 @@ int manager_reload(Manager *m) { fclose(f); f = NULL; + /* Re-register notify_fd as event source */ + q = manager_setup_notify(m); + if (q < 0) + r = q; + /* Third, fire things up! */ q = manager_coldplug(m); if (q < 0) @@ -2384,33 +2413,9 @@ int manager_reload(Manager *m) { m->send_reloading_done = true; -finish: - if (f) - fclose(f); - - if (fds) - fdset_free(fds); - return r; } -static bool manager_is_booting_or_shutting_down(Manager *m) { - Unit *u; - - assert(m); - - /* Is the initial job still around? */ - if (manager_get_job(m, m->default_unit_job_id)) - return true; - - /* Is there a job for the shutdown target? */ - u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); - if (u) - return !!u->job; - - return false; -} - bool manager_is_reloading_or_reexecuting(Manager *m) { assert(m); @@ -2444,24 +2449,36 @@ bool manager_unit_inactive_or_pending(Manager *m, const char *name) { void manager_check_finished(Manager *m) { char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; + Unit *u = NULL; + Iterator i; assert(m); if (m->n_running_jobs == 0) - manager_unwatch_jobs_in_progress(m); + m->jobs_in_progress_event_source = sd_event_source_unref(m->jobs_in_progress_event_source); if (hashmap_size(m->jobs) > 0) { - manager_jobs_in_progress_mod_timer(m); + + if (m->jobs_in_progress_event_source) { + sd_event_source_set_time(m->jobs_in_progress_event_source, + now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC); + } + return; } + manager_flip_auto_status(m, false); + /* Notify Type=idle units that we are done now */ - manager_unwatch_idle_pipe(m); - close_idle_pipe(m); + m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source); + manager_close_idle_pipe(m); /* Turn off confirm spawn now */ m->confirm_spawn = false; + /* This is no longer the first boot */ + manager_set_first_boot(m, false); + if (dual_timestamp_is_set(&m->finish_timestamp)) return; @@ -2487,9 +2504,9 @@ void manager_check_finished(Manager *m) { if (!log_on_console()) log_struct(LOG_INFO, MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), - "KERNEL_USEC=%llu", (unsigned long long) kernel_usec, - "INITRD_USEC=%llu", (unsigned long long) initrd_usec, - "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, + "KERNEL_USEC="USEC_FMT, kernel_usec, + "INITRD_USEC="USEC_FMT, initrd_usec, + "USERSPACE_USEC="USEC_FMT, userspace_usec, "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC), @@ -2503,8 +2520,8 @@ void manager_check_finished(Manager *m) { if (!log_on_console()) log_struct(LOG_INFO, MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), - "KERNEL_USEC=%llu", (unsigned long long) kernel_usec, - "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, + "KERNEL_USEC="USEC_FMT, kernel_usec, + "USERSPACE_USEC="USEC_FMT, userspace_usec, "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.", format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), @@ -2518,13 +2535,17 @@ void manager_check_finished(Manager *m) { if (!log_on_console()) log_struct(LOG_INFO, MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), - "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, + "USERSPACE_USEC="USEC_FMT, userspace_usec, "MESSAGE=Startup finished in %s.", format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC), NULL); } - bus_broadcast_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); + SET_FOREACH(u, m->startup_units, i) + if (u->cgroup_path) + cgroup_context_apply(unit_get_cgroup_context(u), unit_get_cgroup_mask(u), u->cgroup_path, manager_state(m)); + + bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); sd_notifyf(false, "READY=1\nSTATUS=Startup finished in %s.", @@ -2543,11 +2564,29 @@ static int create_generator_dir(Manager *m, char **generator, const char *name) return 0; if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) { + /* systemd --system, not running --test */ p = strappend("/run/systemd/", name); if (!p) return log_oom(); + r = mkdir_p_label(p, 0755); + if (r < 0) { + log_error("Failed to create generator directory %s: %s", + p, strerror(-r)); + free(p); + return r; + } + } else if (m->running_as == SYSTEMD_USER) { + const char *s = NULL; + + s = getenv("XDG_RUNTIME_DIR"); + if (!s) + return -EINVAL; + p = strjoin(s, "/systemd/", name, NULL); + if (!p) + return log_oom(); + r = mkdir_p_label(p, 0755); if (r < 0) { log_error("Failed to create generator directory %s: %s", @@ -2556,6 +2595,8 @@ static int create_generator_dir(Manager *m, char **generator, const char *name) return r; } } else { + /* systemd --system --test */ + p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL); if (!p) return log_oom(); @@ -2588,7 +2629,7 @@ static void trim_generator_dir(Manager *m, char **generator) { } void manager_run_generators(Manager *m) { - DIR *d = NULL; + _cleanup_closedir_ DIR *d = NULL; const char *generator_path; const char *argv[5]; int r; @@ -2624,17 +2665,13 @@ void manager_run_generators(Manager *m) { argv[3] = m->generator_unit_path_late; argv[4] = NULL; - RUN_WITH_UMASK(0022) { - execute_directory(generator_path, d, (char**) argv); - } + RUN_WITH_UMASK(0022) + execute_directory(generator_path, d, DEFAULT_TIMEOUT_USEC, (char**) argv); +finish: trim_generator_dir(m, &m->generator_unit_path); trim_generator_dir(m, &m->generator_unit_path_early); trim_generator_dir(m, &m->generator_unit_path_late); - -finish: - if (d) - closedir(d); } static void remove_generator_dir(Manager *m, char **generator) { @@ -2659,15 +2696,39 @@ void manager_undo_generators(Manager *m) { remove_generator_dir(m, &m->generator_unit_path_late); } -int manager_environment_add(Manager *m, char **environment) { - - char **e = NULL; +int manager_environment_add(Manager *m, char **minus, char **plus) { + char **a = NULL, **b = NULL, **l; assert(m); - e = strv_env_merge(2, m->environment, environment); - if (!e) - return -ENOMEM; - strv_free(m->environment); - m->environment = e; + + l = m->environment; + + if (!strv_isempty(minus)) { + a = strv_env_delete(l, 1, minus); + if (!a) + return -ENOMEM; + + l = a; + } + + if (!strv_isempty(plus)) { + b = strv_env_merge(2, l, plus); + if (!b) + return -ENOMEM; + + l = b; + } + + if (m->environment != l) + strv_free(m->environment); + if (a != l) + strv_free(a); + if (b != l) + strv_free(b); + + m->environment = l; + manager_clean_environment(m); + strv_sort(m->environment); + return 0; } @@ -2676,7 +2737,7 @@ int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { assert(m); - for (i = 0; i < RLIMIT_NLIMITS; i++) { + for (i = 0; i < _RLIMIT_MAX; i++) { if (!default_rlimit[i]) continue; @@ -2713,15 +2774,16 @@ void manager_recheck_journal(Manager *m) { log_open(); } -void manager_set_show_status(Manager *m, bool b) { +void manager_set_show_status(Manager *m, ShowStatus mode) { assert(m); + assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY)); if (m->running_as != SYSTEMD_SYSTEM) return; - m->show_status = b; + m->show_status = mode; - if (b) + if (mode > 0) touch("/run/systemd/show-status"); else unlink("/run/systemd/show-status"); @@ -2736,7 +2798,10 @@ static bool manager_get_show_status(Manager *m) { if (m->no_console_output) return false; - if (m->show_status) + if (!IN_SET(manager_state(m), MANAGER_STARTING, MANAGER_STOPPING)) + return false; + + if (m->show_status > 0) return true; /* If Plymouth is running make sure we show the status, so @@ -2745,6 +2810,20 @@ static bool manager_get_show_status(Manager *m) { return plymouth_running(); } +void manager_set_first_boot(Manager *m, bool b) { + assert(m); + + if (m->running_as != SYSTEMD_SYSTEM) + return; + + m->first_boot = b; + + if (m->first_boot) + touch("/run/systemd/first-boot"); + else + unlink("/run/systemd/first-boot"); +} + void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) { va_list ap; @@ -2756,17 +2835,92 @@ void manager_status_printf(Manager *m, bool ephemeral, const char *status, const if (ephemeral && m->n_on_console > 0) return; - if (!manager_is_booting_or_shutting_down(m)) - return; - va_start(ap, format); status_vprintf(status, true, ephemeral, format, ap); va_end(ap); } -void watch_init(Watch *w) { - assert(w); +int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found) { + _cleanup_free_ char *p = NULL; + Unit *found; + + assert(m); + assert(path); + assert(suffix); + assert(_found); + + p = unit_name_from_path(path, suffix); + if (!p) + return -ENOMEM; + + found = manager_get_unit(m, p); + if (!found) { + *_found = NULL; + return 0; + } + + *_found = found; + return 1; +} + +Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { + char p[strlen(path)+1]; + + assert(m); + assert(path); + + strcpy(p, path); + path_kill_slashes(p); + + return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p); +} + +const char *manager_get_runtime_prefix(Manager *m) { + assert(m); + + return m->running_as == SYSTEMD_SYSTEM ? + "/run" : + getenv("XDG_RUNTIME_DIR"); +} + +ManagerState manager_state(Manager *m) { + Unit *u; + + assert(m); + + /* Did we ever finish booting? If not then we are still starting up */ + if (!dual_timestamp_is_set(&m->finish_timestamp)) + return MANAGER_STARTING; + + /* Is the special shutdown target queued? If so, we are in shutdown state */ + u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); + if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START)) + return MANAGER_STOPPING; + + /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ + u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); + if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || + (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START)))) + return MANAGER_MAINTENANCE; - w->type = WATCH_INVALID; - w->fd = -1; + u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); + if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || + (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START)))) + return MANAGER_MAINTENANCE; + + /* Are there any failed units? If so, we are in degraded mode */ + if (set_size(m->failed_units) > 0) + return MANAGER_DEGRADED; + + return MANAGER_RUNNING; } + +static const char *const manager_state_table[_MANAGER_STATE_MAX] = { + [MANAGER_STARTING] = "starting", + [MANAGER_RUNNING] = "running", + [MANAGER_DEGRADED] = "degraded", + [MANAGER_MAINTENANCE] = "maintenance", + [MANAGER_STOPPING] = "stopping", +}; + +DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);